Feed device for gasolene and air for gas-engines.



PATENTBD OCT. a, 1903.

FEED DEVICE FOR GASOLENE ANE AIR FOR GAS'BNGINES. APPLIUATIOH Plum mun, 1901.

8 SHBETSSHEET l.

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R. B. THOMPS 0N & E. KOE

FEED DEVICE FOR GASOLENE AND AIR FOR GAS ENGINES. APPLIGATIOH rILBn H0111, 1901.

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the. 740,488.

Units); STATES Iliatented October 6, 190%.

PATENT @rrrcn.

RALPH P. THOMPSON AND EVMIL KOEB, OF SPRINGFIELD, OHIO.

FEED DEVICE FOR GASOL'EN EfAND AIR FORGAS-ENGINES.

$E51SCIFIGATION forming part of Letters Patent No. 740,488, dated October 6, 1903. Application filed November 11,1961. semi] No. 81,867. (No model.)

To ctZltuh/om it may concern: 1

Be it known that we, RALPH P. THOMPSON and EMIL KOEB, citizens of the United States, residing at Springfield, in the conn'tyof Clark and State of Ohio, have invented a certain new and useful Improvement in Feed .De-

vices for Gasolene and Airfor Gas-Engines,

' of which the following is a specification.

The invention relates to devices for regulating and controlling. the admission of the charge of gasolene and air into the explosionchamber of a gas-engine, and has for its objects to insure a positive and reliable operation of the valves controlling the flow of the gasolene, inconjunction with means for supplying air with the charge in sufficient quantity to insure its positive injection into the working cylinder, to improve the air-injecting pump in its construction and operation in relation to the valves controlling the admission of the gasolene, to supply outside air to the air-injecting pump to the amount ref quired for a proper charge, to automatically operate the controlling-valves for admitting the charge of gasolene from the sourceof sup: ply to the explosion-chamber through the op eration of the air-injecting'pump, and to im prove generally the construction and opera* tion of the devices which enter into the feed appliances as a whole; and the invention consists in the features of construction and combinationof parts hereinafter described and showing the air-injecting pump with its pis ton in its receded position; Fig. 3, a similar view to Fig. 2',showing the air-injecti-ng pump with its piston advanced; Fig. 4, a detail, be ing a top plan view of the'parts shown, with a portion of the air-injecting pump in section; -Fig. '5, a detail in section on line as w of Fig. 4, and Fig. 6 a detail in section on line y y of Fig. l.

The invention'relaies specifically to the feeding of the gasolene-and air into the explosion-chamber, and only so much ofacomplete engine is shown in the drawings as is deemed necessary to properly illustrate the construction, location, arrangement, and opproperly pertains; nor is it deemed necessary to specifically describe each and every part or element shown in the drawings, and the detail description, therefore, will be contion.

The engine shown is of the ordinary class of two-piston gas-engines, t-heengine having a cylinder A, with a neck A and an extension A at opposite ends of the main cylinder, in which cylinder and its neck and extension the power-pistons are located and operate, and, as shown, holes a are provided at each end of the main cylinder for lubricating the power-pistons. The upper side of the cylinder in the construction shown has therein an opening a in communication with the explosion-chamber, and this opening is surrounded by a wall or ledge 0/, having a fiat face. A plate B-is mounted on the flat face of the wall or ledge and secured in place by bolts 1) or otherwise, and on this plate is mounted a second plate or head 0, secured in place on orhead O in the construction shown has a depending circular boss or plug 0, which is en- --tered into a hole therefor in the plate B, and in this plug is a chamber 0', which, as shown, extends slightly into the body of the plate or head; The plate or head has on its upper face extendingup therefrom a boss'or nipple C having in its end a hole 0 and provided with an'exterior screw-thread around its end to receive a cap or cover (3 which has therein a hole to aline with the holec in the boss or nipple. Acasingor shell D, having therein a chamber d and a chamber at, separated one from the other by across partition or wall (1 is screw-threaded, as shown, onto a boss or nipple D, which in turn isscrew-threaded into the plate or head 0, so as to leave between the end of the boss or nipple and the face of the opening into which it is screwthreaded a chamber 0 which is in communication with the chamber o' by a duct or passage c, and the end of the boss or nipple D has therein a chamberd which is in commnnication with the chamber d by a passage d in the boss or nipple. A screw-threaded valve-stem E operates in the neck of the shell or casing D, and the stem is encircled by a eration of the devices to which the invention the plate B by bolts c'or otherwise. The platefined to the parts or elements of the inveu cap-nut D having a chamber therein to receive a packing (1 by which a tight joint is provided around the valve-stem. The inner end of the stem E has a point e, which fits into a port or opening e in the cross-wall d so that by turning the stem in the proper direction the port or opening can be closed or opened, and to turn the stem a hand-wheel E is attached to the outer end thereof. The boss or nipple D carries a valve-stem F, on the lower end of which is a valve-diskfiwhich controls a port or opening f between the chamber 0 and the chamber d so that when the valve-disk is open and the valve E is likewise open communication is established between the chamber d and the chamber 0 for the connected chambers to form, in effect, a passage in the shell or casing and the boss or nipple into the head or plate, which passage consists of an upper section formed by the chamber 61, an intermediate section formed by the chamber d, and a lower section formed by the chamber 01 which last-named chamber opens into the chamber 0 which chamber 0 is a supply-chamber into which the gasolene is delivered and from which the gasolene is sup plied to the chamber 0 to be therein commingled with air fora mixture of gasolene and air for the explosive charge. The opposite end of the stem F to the valve-disk has there on a nutf and encircling the stem between the nutf and the end face of the boss or nipple D is a coil-springj' by means of which the valve-disk is held normally seated to close the port or opening into the chamber 0 so that gasolene cannot enter such chamber. A valve-stem G is carried by the plate or head 0 and the boss or nipple O and this stem at one end has attached thereto a valve-disk g, which seats against a face around a port or opening g at the discharge end of the chamber a, by means of which stem and valve-disk the discharge from the chamber 0 of the charge of gasolene and air is controlled. The stem G at the end opposite to the valve-disk has thereon an adjustable nut 9 and encircling the stern between the nut and the end face of the chamber 0 is a coil-spring 9 by means of which the valve-disk is held normally seated, closing the port or opening from the chamber 0 and preventing the escape of the contents of such chamber.

A tubular stem 1, having an opening or passage t', extends out from one side of the plate or head 0 and receives on its end a coupling-nut t" for a coupling-tube I, which is screw-threaded into the eduction or discharge nipplej of the air-injecting pump, the discharge-passage of which communicates withthe passage 2', which passage is continuous through the tubular stem, the couplingnut, and tube and discharges into the receiving-chamber c, as shown in Fig. 6. The airinjecting pump has a cylinder J of the proper length and diameter, in which is located and operates a piston K, connected to a pistonrod K by an eye on the piston-rod and a pivot-pin k in the piston, so that the outer or free end of the rod is free to rise and fall, in the construction shown, with the reciprocation of the piston. The discharge end of the cylinder J is closed by a cap or cover J,

-screw-threaded onto the end of the cylinder,

and this cap has screw-threaded thereinto a plug L, having an axial passage or chamber 1, into which ports or openings Z lead through the body of the plug, and extending out from the plug is a tubular stem L, which carries a valve-stem M, having at one end a valve-disk m,which seats against a face around a port or opening l at the discharge end of the chamber or passage Z into the cylinder in frontof the cap or head and between the cap or head and the piston, so that with the advance stroke of the piston the valve-disk will be opened, admitting air into the chamber of the cylinder between the piston and cylinder-head for the return stroke of the piston to force the air out through the eduction or discharge and the passage/11 into the receiviugchamber for the gasolene and air. The tubular stem L is encircled by a coil-spring m, one end of which abuts against the end face of the plug L and the other end of which contacts a cross-pin m for the spring to act and close the valve-disk m after each opening thereof and holding the disk closed normally. The valve-disk m when opened allows air to pass through the ports or openings l into the chamber or passage Z and dischar e through the opening or port Z into the chani ber of the injecting-pump in front of the pump-piston, and the air drawn into the chamber of the injectingpump and forced therefrom into the receivingchamber ccommingles with the gasolene in said chamber and serves to bring the gasolene up to full vaporization, which is a requisite before admitting the charge into the explosion-chamber of the engine in order to increase the efliciency of the charge, attain the proper mixture and vapors, produce the best results, and secure the highest eifect-s from the explosion thereof in the explosion-chamber of the engine.

A cross-head N is connected to one piston of the engine, and a cross-head N is connected to the other piston of the engine, and from the cross-head N, at each end thereof, a connecting-rod 0 extends to a crank P of a crank-shaft Q, and from the cross-head N, at each end thereof, a connecting-rod 0 extends to a crank P of the.crank-shaft Q, which shaft is to be mounted in suitable journal-boxes. (Notshown) An arm H extends up from the cross-head N in line with the center of the cylinder J in the construction shown, and the piston-rod K is attached to the outer end of this arm R by a coupling or fork head 0 and a pivot-pin 0, so that with the reciprocating movement of the crosshead the arm R will be carried back and forth, giving a reciprocating movement to the piston K from the piston-rod K, which movement of the piston is straight, by reason and its rod, which allowsof the movement of the piston-rod coincident with the movement of the operating-arm R from the movement of the cross-head N, which carries the arm. The cylinder J in the construction shown is mounted on the cylinderlof the engine so as to have an upward inclination at its outer or open end, and, as shown, the cap or head of the cylinder has a band 13 and the cylinder has a band p, each band having ears 10 which receive the edge of a plate q, attached to the engine-cylinder, through which plate and ears bolts (1 pass, mounting the cylinder J firmly in position. The neck A has formed therewith or connected thereto a shell or casing S, in which is a piston '1, connected with a piston of the engine, and these parts constitute an air-pump for supplying air to the explosion-chamber between the two pistons of the engine through a conducting-pipe U, and, as shown, an opening at on each side is formedin the neck A and the shell or casing S for the traverse of the cross-head N, and

an opening nf-is formed on each side in the extension A for the traverse of the cross-head N, and the opening it extendsLforward of the limit of recession of the piston T, so as to escape air during a portion of the advance of the piston. The air-pump formed by the shell or casing and the piston in connection with the escape-openings n are not herein specifically described, as they constitute the subject-matter of another application, the same being application Serial No. 81,642, filed November 8, 1901.

The operation'is as follows: The gasolene from the source of supply flows through the pipeH into the chamber or first section at of the feed-passage for the gasolene. The stem E is turned as required to raise the needlevalveor point e from its seat around the port or passage 6, so as to leave a sutiicient space for the gasolene to flow from the chamber or first section dinto the chamber or second section d of the passage for the gasolene, and from the chamber or second section at of the pas-' sage the gasolene flows through the duct or passage d into the last chamber or section (i of the gasolene-passage, where it is retained until the valve-diskfis opened, allowing the proper amount thereof to enter the chamber 0 and pass from such chamber through the duct or passage 0 into the receiving and mixing chamber 0 for thegasolene and air. The air to bring the chargeup to the pressure of a full atmosphere is forced or inducted into the receiving and mixing chamber 0' through the passage t from the air-injecting pump, completing the charge of mixed gasolene and air for admission into the explosion-chamber of the gas-engine, which admission occurs with the opening of the valve-disk g as the air is forced into the receiving and mixing chamber. Thevalve-stem E when adjusted for the properopening of its needle or pointed end e can be left in that position for'ordinary.

use, but can be readily turned to increase or decrease the space between the needle or disk f is held normally-closed by the spring fiend is opened by the suction of the outward traverse or advance stroke of the piston of the air-injecting pump, allowing the gasolene to enter the chamber-c and. flow through the duct or passage 0 into the receiving chamber 0, the valve disk g of which is held normally closed by the spring 9 and is firmly seated by the suction from the outward travel or advance stroke of the piston'of the air-injecting pump, so that the gasolene. entering the-receiving and mixing chamber will be retained therein during the return stroke or travel of the piston. The outward traverse or advance stroke of the piston of the air-injecting-pum-p by its suction opens the valve-disk m for air to enter the chamber of the cylinder J betweenthe head of the cylinder and the piston, so that with the outwardtraverse or advance stroke of the piston of the air-injecting. pump gasolene flows into the receiving and mixing chamher a and air flows into the chamber of the cylinder J in front of. the pistonand into the receivingand mixing chamber through the passage 6, giving the required charge of air and gasolene- The inwardv travel or receding stroke of the piston or plunger ofthe airinjecting pump forces the air from the eduction or discharge of the cylinder under pressure through the passage i into the receiving and mixing chamber 0, and the pressure opens the valve-disk g for the discharge of the air and gasolene through the port or opening of the chamber into the explosion-chamber, and with such opening of the valve-disk g the valve-disk f, which has been closed by the action of the springf at the terminus of the outward traverse or advance stroke of the piston K, is held firmly to its seat around the port f, shutting off the-flow of gasolene intothe receivingandmixing chamber. The valve-disk 9 will be held open and the valvedisk f will beheld closed during the inward traverse or return strokeof the piston K, preventing the gasoleue from flowing into the ersereturn stroke. of theipiston- K opens the eduction-valve g, with the induction-valve f closed, for discharging the contents of the receiving and mixing chamber into the explosion-chamber,. and these movements of the respective valves will continue'as long as the engine runs, thus insuring an automatic opening and closing of the respective Valves at the time required for admitting the gasolene and for discharging the gasolene and air, thus insuring an automatic feed for gasolene and air to the explosion-chamber as long as the engine operates.

The arrangement shown opens the induction-valve f with the eduction-valve g closed as the engine-pistons travel outward or in the advanced direction for the production of power,.so that the feed of the gasolene into the receiving and mixing chamber occurs after the explosion and during the period of the time occupied in the travel of the power-pistons outward or in their advanced direction, at the end of which time the explosion-chamber is cleared of the gases, vapors, and products of the explosion. The eduction-valve g is opened to discharge from the receiving and mixing chamber the charge with the inward or receding movement or stroke of the piston K, with the induction-valvefclosed, shutting 011' the admission of gasolene to the receiving and mixing chamber during the return or receding stroke of the piston, forcing the prepared charge into the explosion-chamber. It

- will thus be seen that the opening and closing of the induction and eduction valves for the feed is in correlation with the strokes of the power-pistons, the gasolene-feed being open with the eduction closed as the powerpiston makes its advance or outward movement and the gasolene-feed being cut ofi and the eduction open as the power-piston makes its return or inward movement. The valvestem carrying the needle valve or point enables the feed of the gasolene to be accurately and correctly regulated, and the inductionvalve for the gasolene-passage actuated b ysuction from the movements of the air-injecting piston, the stroke of which is requisite for the feed of gasolene required for a charge, places the control of the feed automatically from the movements of the air-injecting piston, which piston also automatically opens the eduction-valve for the charge of gasolene and air, so that the opening and closing of the induction gasolene-valve and the eduction charging-valve are both automatically performed by the movements of the piston of the air-injecting pump, thus placing the control of the gasolene and air under the movements of the piston of the air-injecting pump. The appliance is simple in construction and automatic in operation, depending for its operation on the running of the engine, and in use the appliance operates to perfectly and accurately control and regulate the feed of the gasolene, the charging with air, and the discharge of the mingled gasolene and air into the explosion-chamber, thus insuring in each instance a perfectly uniform and regulated feed and discharge of gasolene and air.

We claim- 1. Inagasoleneandairfeedforgas-engines, the combination of a gasolene-passage comprising an upper section, an intermediate sec tion and a lowersection, a partition between the upper and intermediate sections and having a port therein, a regulating-valve controlling the fiow through the port, a feed duct or passage between the intermediate section and -the lower section, a supply-chamber below and in communication with the lower section of the gasolene-passage, a pressure-actuated Valve controlling the discharge from the lower section of the gasolene-passage into the supply-chamber, a receiving and mixing chamber in communication with the supply-chamber, and a pressure-actuated valve controlling the discharge from the receiving and mixing chamber and opening with the closing of the discharge-valve for the supply-chamber and closing with the opening of the dischargevalve for the supply-chamber, substantially as described.

2. In a gasolene and air feed for gas-engines, the combination of a gasolene-passage comprising an upper section, an intermediate section and a lower section, a partition between the upper and intermediate sections and having a port therein, a regulating-valve controlling the flow through the port, a feed duct or passage between the intermediate section and the lower section, a supply-chamber below and in communication with the lower section of the gasolene-passage, a pressure-actuated valve controlling the discharge from the lower section of the gasolene-passage into the supply-chamber,a receiving and mixing chamber in communication with the supply-chamber, a pressure-actuated valve controlling the discharge from the receiving and mixing chamber and opening with the closing of the discharge valve for the supply chamber and closing with the opening of the dischargevalve for the supply-chamber, an air-injecting pump, and an air-passage leading into the receiving and mixing chamber from the chamber of the injecting-pu mp to supply air to the receiving and mixing chamber and by its operation open and close the dischargevalves of the gasolene-supply chamber and the receiving and mixing chamber, substantially as described.

3. In a gasolene and air feed forgas-engines, the combination of a gasolene-passage comprising an upper section, an intermediate section and a lower section, a partition between the upper and intermediate sections and having a port therein, a regulatingneedle or pointed valve controlling the flow of gasolene through the port, a feed duct or passage between the intermediate section and the lower section of the gasolene passage, a supplychamber below and in communication with the lower section of the gasolene-passage, a valve actuated by suction to open and springactuated to close for controlling the discharge from the lower section of the gasolene-passage into the supplychamber, a receiving and mixing chamber in communication with the supply-chamber,a valve actuated by pressure to open and spring-actuated to close for.con-.

trolling the discharge from the receiving and mixing chamber, said valve opening with the closing ot' the discharge-valve for the su pplychamber and closing with the opening of the discharge-valve for the supply-chamber, substantially as described.

4. In a gasolene and air feed for gas-engines,

-the combination of a gasolene-passage comprising an upper section, an intermediate section and a lower section, apartition betweenthe upper and intermediate sections and having a port therein, a regulating-needle or pointed valve controlling the flow of gasolene through the port, a feed duct or passage between the intermediate section and the lower section of the-gasolene-passage, a supply-chamber below and in communication with the lower section of the gasolene-pass'age, a valve'actuated by suction to open and springactuated to close for controlling the discharge from the lower section of the gasolene-passage into the supply-chamber, a receiving and mixing chamber in communication with-the supply-chamber, a valve actuated by pressure to open and spring-actuated'to close for controlling the discharge from the receiving and mixing chamber, said valve opening with the closing of the discharge-valve for the supplychamber and closing with the opening of the discharge-valve for the supply-chamber, an

air-injecting pump, and an air passage lead-v log into the receiving and mixing chamber from the chamber of the injecting-pump for the pump to supply air to the receiving and mixing chamber and have the suction of the pump open the discharge-valve from the supply-chamber and the pressure of the pump open the discharge-valve from the receiving and mixing chamber, substantially as described.

5. In agasolene and air feed for gas-engines, the combination of a plate or head having a receiviug and mixing chamber, 'a valve controlling the discharge from the receiving and mixing chamber, an enteringchamber for gasolene in the plate or head, a passage between the entering-c'namber and the receiving and mixing chamber, a shell or casing on the plate or head, a partition dividing the interior of the shell or easing into two chambers or compartments, avport or passage in the partition,-a needle or pointed valve controlling the port in the partition, a boss or nipple having the shell or casing attached thereto, a chamber in the boss or nipple, a passage connecting the chamber of the boss or nipple with a chamber of the shell or casing, a valve controlling the communication between the chamber of the boss or nipple and the entering-chamber of the plate or head, an air-passage leading into the receiving and mixingchamber,and an air-injecting pumpin communicationwith the receiving and mixing chamber for forcing air into the chamber.

6. i In a gasolene and air feed for gas-engines,

the combination of a gasolene-passage comprising an upper section, an in termediate section and a lower section, a partition between the upper and intermediate sections and having a port therein, a regulating needle or pointed valve controlling the flow of gasolene through the port, a feed duct or passage between the intermediate section and the lower section of the gasolene-passage, a supply chamber below audin communication with the lower section of the gasolene-passage, a valve actuated by suction to open and springactuated to close for controlling the discharge from the lower section of the gasolenepassage into thesupply-chamber, a receiving and mixing chamber in communication with the supply-chamber, a valve actuated by pressure to open and spring-actuated to close forcontrolling the discharge from the receivingand mixing chamber, said valve opening with theclosing of the discharge-valve for the supply-chamber and closing with the opening of the discharge-valve for the supplych'amber, an air-injecting pump, an air-passage leading into the receiving and mixing chamber from the chamber of the injectingpu'mp for the pump to supply air to the re ceiving and mixing chamber and have the suction of the pump open the discharge-valve from the supply-chamber and the pressure of the pump open'the discharge-valve from the receiving and mixing chamber, a passage leading from the external air intothe air-injecting pump, and a valve controllingthe admission of air from the passageinto the chamber of the air-injecting pump, said valve actuated by the suction of the injecting-pump to open and spring-actuated to close the passage, sub

stantially as described.

7. In a gasolene and air feed for gas engines, the combination of a gasolene-passage comprising an upper section, an intermediate sec tion and a lower section, a partition between the upper and intermediate sections and having a port therein, a regulating needle or pointed valve controlling the flow of gasolene through the port, a feed duct or passage between the intermediate section and the lower section of the gasolene passage, a supply chamber below and in communication with the lower section of the gasolene-passage, a valve actuated bysuction to open and spring: actuated to close for controlling the discharge from the lower section of the gasolenepassage into the supply-chamber, a receiving and mixing chamber in communication with the supply chamber, a valve actuated by pressure to open and spring-actuated to close for controlling the discharge from the receiving and mixing chamber, saidvalve opening with the closing of the discharge-valve for the supply-chamber and closing with the opening of the discharge-valve for the supply-chamber, an air-injecting pump, an 'airpassage leading into the receiving and mixing chamber from the chamber of the injectsuction of the pump open the discharge-valve from the supply-chamber and the pressure of the pump open the discharge-valve from the receiving and mixing chamber, a plug eutered into the cylinder-head of the pump, a chamber in the plug, passages leading from the chamber in the plug to the external air, and a valve controlling the discharge from the chamber of the plug actuated by the suction of the pump to open and spring-actuated to close, substantially as described.

8. In a gasolene and air feed for engines, the combination of a plate or head attached to the cylinder of the engine and having a receiving and mixing chamber therein, a valve controlling the discharge from the receiving and mixing chamber into the engine-cylinder, said valve actuated by pressure to open and spring-actuated to close, a gasolene-passage comprising an upper section, an intermediate section and a lower section, a partition between the upper and intermediate sections and having a port therein, a regulating-needle or pointed valve controlling the flow of the gasolene through the port, a feed duct or passage between the intermediate section and the lower section of the gasolenepassage, a supply-chamber below and in communication with the lower section of the gasolene-passage, a valve controlling the discharge from the lower section of the gasolene-passage into the supply-chamber, said valve actuated by suction to open and springactuated to close, a duct furnishing communication between the supply-chamber and the receiving and mixing chamber, and an air-injecting pump mounted on the cylinder of the engine and having communication with the receiving and mixing chamber and operating by its suction to open the valve of the supply-chamber and by its pressure to open the valve of the receiving and mixing chamber, one valve opening with the other valve closed, substantially as described.

9. In a gasolene and air feed for engines,

the combination of a plate or head attached to the cylinder of the engine and having a receiving and mixing chamber therein, a valve controlling the discharge from the receiving and mixing chamber into the engine-cylinder, said valve actuated by pressure to open and spring-actuated to close, a gasolene-passage comprising an upper section, an intermediate section and a lower section, a partition between the upper and intermediate sections and having a port therein, a regulating-needle 0r pointed valve controlling the flow of the gasolene through the port, a feed duct or passage between the intermediate section and the lower section of the gasolene-passage, a supply-chamber below and in communication with the lower section of the gasolene-passage, a valve controlling the discharge from the lower section of the gasolene-passage into the supply-chamber, said valve actuated by suction to open and springactuated to close, a duct furnishing communication between the supply-chamber and the receiving and mixing'chamber, an airinjecting pump mounted on the cylinder of the engine and having communication with the receiving and mixing chamber and operating by its suction to open the valve of the supply-chamber and by its pressure to open the valve of the receiving and mixing chamber, one valve opening with the other valve closed, a plug entered into the cylinder-head of the pump, a chamber in the plug, passages leadingfrom the chamber to the external air through the plug, and a valve controlling the chamber in the plug actuated by the suction of the pump to open and spring-actuated to close, substantially as described.

RALPH P. THOMPSON. EMIL KOEB. Witnesses:

D. Z. GARDNER, T. J. ll/ICCORMICK. 

